Toolhead for a shaping machine

Abstract

The invention concerns a tool head for shaping machine designed to machine the side segments of tree trunks. The tool head has a rotationally driven main body (1) with several groups of chipper blades (2, 3) round its circumference. The front chipper blade (2) in each group and a front-mounted finishing tool, e.g. a segment (4) of a circular-saw blade, are mounted on a common tool carrier (5). The tool carrier (5) is detachably attached to the tool-head main body (1) and is held in place by clamps (16). If, as a result of wear, it becomes necessary to replace a tool, the tool carrier is replaced after the clamp (16) has been loosened.

We claim: 
     
       1. A toolhead for cutting wood workpieces comprising: a main body including a front side and a rear side spaced apart along an axis disposed substantially perpendicularly to a direction of feed of wood workpieces, the main body being rotatable about the axis as the workpieces are fed adjacent the front side;   a plurality of chopping teeth and a plurality of planing teeth arranged on the body to rotate therewith, the chopping teeth including respective chopping edges, and the planing teeth including respective planing edges, the chopping teeth and the planing teeth being distributed circumferentially with respect to the axis,   the chopping edges being of longer length than the planing edges and defining a cutting circle of larger diameter than the planing edges,   the chopping edges extending closer to the rear side of the main body than do the planing edges; and     a toolholder removably mounted on the front side of the main body and carrying at least one of the chopping teeth and at least one of the planing teeth, whereby the at least one chopping tooth and the at least one planing tooth are installable and removable together with respect to the main body.   
     
     
       2. The toolhead according to claim 1 wherein the toolholder comprises a segment of a ring. 
     
     
       3. The toolhead according to claim 1 wherein the toolholder is ring-shaped. 
     
     
       4. The toolhead according to claim 1 wherein the planing teeth comprise saw teeth. 
     
     
       5. The toolhead according to claim 4 wherein the toolholder is in the form of a ring segment and includes forward and rearward ends, a chopping tooth being mounted at the forward end. 
     
     
       6. The toolhead according to claim 5 wherein the main body includes a tensioning hole, a tensioning device mounted in the main body in alignment with the tensioning hole, a tensioning pin extending through the toolholder in a direction parallel to the axis of rotation and received in the tensioning hole and engaged by the tensioning device, and a fastener received in the tensioning pin for releasably mounting the toolholder on the main body. 
     
     
       7. The toolhead according to claim 6 wherein the tensioning pin includes a pull head engaged by the tensioning device. 
     
     
       8. The toolhead according to claim 7 further including channels formed in the main body for conducting fluid to and from the tensioning device for displacing the tensioning pin. 
     
     
       9. The toolhead according to claim 5 wherein the fastener comprises a screw. 
     
     
       10. The toolhead according to claim 9 further including a centering pin extending through the tensioning hole, the screw extending into the centering pin.